This guide is customized for your 2014 Nissan SENTRA
P0173: P0173: Fuel Trim Malfunction (Bank 1)
on 2014 Nissan SENTRA
Important for 2014 Nissan SENTRA Owners
Before starting repairs, verify which engine your 2014 Nissan SENTRA has. Check your VIN or engine code to ensure you order the correct parts.
📖 What Does P0173 Mean on 2014 Nissan SENTRA?
Symptoms
- • Rough idle
- • decreased power
- • poor fuel economy
- • and a check engine light
Common Causes
- • Vacuum leak
- • faulty oxygen sensor
- • clogged fuel filter
- • dirty or clogged fuel injectors
- • faulty fuel pressure regulator
- • or a malfunctioning fuel pump
How to Fix P0173 on 2014 Nissan SENTRA
1. Check for vacuum leaks and repair as necessary. 2. Replace the oxygen sensor if faulty. 3. Clean or replace the fuel filter. 4. Check and clean fuel injectors. 5. Check fuel pressure and replace the fuel pressure regulator if necessary. 6. Check the fuel pump and replace if necessary.
Need Maintenance Info for Your SENTRA?
Get oil capacity, filter specs, and torque settings for your specific 2014 Nissan SENTRA.
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Related Diagnostic Codes
Other codes that may appear with P0173
System Too Lean Bank 1
System Too Rich Bank 1
System Too Lean Bank 2
System Too Rich Bank 2
💡 Why These Codes Are Related:
- • Similar Issues: Same root cause or component failure
- • Related Problems: Often occur together due to system interactions
- • Sequential Codes: Progressive failure stages or multiple sensors
- • Same System: Components within the same automotive system